Large-force-value electric actuator

Abstract

The utility model relates to the technical field of actuators, and discloses a large-force-value electric actuator, which comprises an actuator main body and an inhaul cable, a driving motor and a multi-stage transmission mechanism are arranged in the actuator main body, the multi-stage transmission mechanism comprises a plurality of wheel shafts which are in transmission in sequence, and each wheel shaft is provided with a first transmission wheel and a second transmission wheel. The diameter of the first transmission wheel is larger than that of the second transmission wheel, the second transmission wheel of the front wheel shaft is meshed with the first transmission wheel of the rear wheel shaft, the driving motor is used for driving the first transmission wheel of the first wheel shaft to rotate, and the second transmission wheel of the last wheel shaft is connected with a stay wire of the inhaul cable. According to the large-force-value electric actuator, the torque is output through the multi-stage transmission mechanism, so that the pulling force of the inhaul cable is multiplied in a limited space, the large-force-value output requirement is met, the unlocking action of the actuator is completed, even multi-point-position unlocking can be achieved, and the functionality of the actuator is improved.

Description

Technical Field

[0001] This utility model relates to the field of actuator technology, and in particular to a high-force electric actuator. Background Technology

[0002] Currently, actuators used for unlocking are gradually shifting towards automation, but the output force of existing electric actuators is only about 100N, which cannot meet the requirements for high force or multi-point unlocking. To achieve the target force, it can only be achieved by enhancing the structural design, but this also makes the actuator occupy a large space, with a more complex structure, poor compactness, and higher manufacturing costs, thus requiring technological improvements. Utility Model Content

[0003] The purpose of this utility model is to provide a high-capacity electric actuator to solve the problems mentioned in the background art and ensure the normal function of the cable.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A high-power electric actuator includes an actuator body and a cable. The actuator body is equipped with a drive motor and a multi-stage transmission mechanism. The multi-stage transmission mechanism includes several sequentially driven axles. Each axle is equipped with a first transmission wheel and a second transmission wheel. The diameter of the first transmission wheel is larger than the diameter of the second transmission wheel. The second transmission wheel of the preceding axle meshes with the first transmission wheel of the following axle. The drive motor is used to drive the first transmission wheel of the first axle to rotate. The second transmission wheel of the last axle is connected to the cable's tension wire.

[0006] As an alternative, a return spring is fitted on the last axle, with one end of the return spring fixed to the axle and the other end fixed to the actuator body.

[0007] As an alternative, the second drive wheel located on the last axle is a thread wheel used to fix and wind the pull wire.

[0008] As an alternative, a worm gear is installed on the output shaft of the drive motor, and the first transmission wheel on the first wheel shaft is a worm wheel that meshes with the worm gear.

[0009] As an alternative, the second transmission wheel on the first axle, the first transmission wheel on the last axle, and the first and second transmission wheels on the intermediate axles are all spur gears.

[0010] As an alternative, the sleeve cover of the cable is fixed to the actuator body, and the cable extends out of the sleeve cover and passes through the actuator body.

[0011] As an alternative, the actuator body includes an upper cover and a base. The upper cover is connected to the base by screws, and a cavity is formed between the upper cover and the base to accommodate the drive motor and the multi-stage transmission mechanism.

[0012] The beneficial effects of this utility model are:

[0013] Compared with existing technologies, this high-capacity electric actuator outputs torque through a multi-stage transmission mechanism, which multiplies the cable tension within a limited space to meet the high-capacity output requirements and complete the actuator's unlocking action. It can even achieve multi-point unlocking, thus improving the actuator's functionality. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of the high-force electric actuator provided in this embodiment of the utility model.

[0015] In the attached image:

[0016] 1. Actuator body; 2. Cable; 3. Drive motor; 4. Axle; 5. First transmission wheel; 6. Second transmission wheel; 7. Return spring; 8. Spool; 9. Worm gear; 10. Cable; 11. Sleeve cover; 12. Base. Detailed Implementation

[0017] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0018] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0020] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] Furthermore, the terms "first" and "second" are merely used to distinguish between different terms in description and do not have any special meaning.

[0022] Please see Figure 1 As shown, this embodiment provides a high-force electric actuator, including an actuator body 1 and a cable 2. The actuator body 1 is equipped with a drive motor 3 and a multi-stage transmission mechanism. The multi-stage transmission mechanism includes several sequentially driven axles 4. Each axle 4 is equipped with a first transmission wheel 5 and a second transmission wheel 6. The diameter of the first transmission wheel 5 is larger than the diameter of the second transmission wheel 6. The second transmission wheel 6 of the preceding axle 4 meshes with the first transmission wheel 5 of the following axle 4. The drive motor 3 is used to drive the first transmission wheel 5 of the first axle 4 to rotate. The second transmission wheel 6 of the last axle 4 is connected to the cable 10 of the cable 2.

[0023] Therefore, the torque is output through a multi-stage transmission mechanism, which multiplies the tension of cable 2 within a limited space, meets the requirements of high force output, completes the unlocking action of the actuator, and can even achieve multi-point unlocking, thus improving the functionality of the high force electric actuator.

[0024] The multi-stage transmission mechanism in this embodiment is exemplified by three wheel axles 4, but it is not limited to three wheel axles 4. It can be increased or decreased according to actual needs. Through the transmission of three wheel axles 4, the original tensile force of 100N can reach more than 300N, and the force amplification effect is significant.

[0025] Optionally, a return spring 7 is fitted on the last axle 4, with one end of the return spring 7 fixed to the axle 4 and the other end of the return spring 7 fixed to the actuator body 1.

[0026] Therefore, the return spring 7 enables the cable 2 and the lock end to automatically return to their original positions after the actuator is unlocked. In fact, when the drive motor 3 is not working, each axle 4 maintains its transmission function, and the return spring 7 can be installed on any axle 4 to achieve its reset function.

[0027] Furthermore, the second drive wheel 6 located on the last axle 4 is a thread wheel 8 used to fix and wind the pull wire 10.

[0028] Therefore, under the action of the return spring 7, the pulley 8 can cause the pull cable 10 to retract, ensuring that the lock end quickly resets after unlocking.

[0029] Optionally, a worm 9 is provided on the output shaft of the drive motor 3, and the first transmission wheel 5 located on the first wheel axle 4 is a worm wheel that meshes with the worm 9.

[0030] Furthermore, the second transmission wheel 6 located on the first axle 4, the first transmission wheel 5 located on the last axle 4, and the first transmission wheel 5 and the second transmission wheel 6 on the intermediate axle 4 are all spur gears.

[0031] Thus, through the worm gear and worm 9, the rotational motion of the drive motor 3 is converted into the rotation of the first wheel axle 4. Through the transmission of the large and small spur gears between adjacent wheel axles 4, the torque is amplified step by step, thereby ensuring that the actuator body 1 drives the cable 2 to transmit the force to the lock end to complete the unlocking action.

[0032] Optionally, the sleeve cover 11 of the cable 2 is fixed to the actuator body 1, and the pull wire 10 extends out of the sleeve cover 11 and passes into the actuator body 1.

[0033] Therefore, the actuator body 1 can reliably transmit force through the cable 2.

[0034] Optionally, the actuator body 1 includes an upper cover and a base 12. The upper cover is connected to the base 12 by screws, and a cavity is formed between the upper cover and the base 12 to accommodate the drive motor 3 and the multi-stage transmission mechanism.

[0035] This facilitates the installation and maintenance of the drive motor 3 and the multi-stage transmission mechanism, and improves the integration of the actuator, ensuring a stable and compact transmission structure.

[0036] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A high-capacity electric actuator, characterized in that, The device includes an actuator body (1) and a cable (2). The actuator body (1) is equipped with a drive motor (3) and a multi-stage transmission mechanism. The multi-stage transmission mechanism includes several sequentially driven axles (4). Each axle (4) is equipped with a first transmission wheel (5) and a second transmission wheel (6). The diameter of the first transmission wheel (5) is larger than the diameter of the second transmission wheel (6). The second transmission wheel (6) of the previous axle (4) meshes with the first transmission wheel (5) of the next axle (4). The drive motor (3) is used to drive the first transmission wheel (5) of the first axle (4) to rotate. The second transmission wheel (6) of the last axle (4) is connected to the cable (10) of the cable (2).

2. The high-force electric actuator according to claim 1, characterized in that, A return spring (7) is fitted on the last axle (4). One end of the return spring (7) is fixed on the axle (4), and the other end of the return spring (7) is fixed on the actuator body (1).

3. The high-force electric actuator according to claim 2, characterized in that, The second drive wheel (6) located on the last of the said axles (4) is a thread wheel (8) for fixing and winding the pull line (10).

4. The high-force electric actuator according to claim 1, characterized in that, The output shaft of the drive motor (3) is provided with a worm (9), and the first transmission wheel (5) located on the first wheel axle (4) is a worm wheel that meshes with the worm (9).

5. The high-force electric actuator according to claim 1, characterized in that, The second transmission wheel (6) located on the first axle (4), the first transmission wheel (5) located on the last axle (4), and the first transmission wheel (5) and second transmission wheel (6) on the middle axle (4) are all spur gears.

6. The high-force electric actuator according to claim 1, characterized in that, The sleeve cap (11) of the cable (2) is fixed on the actuator body (1), and the pull wire (10) extends out of the sleeve cap (11) and passes into the actuator body (1).

7. The high-force electric actuator according to claim 1, characterized in that, The actuator body (1) includes an upper cover and a base (12). The upper cover is connected to the base (12) by screws. A cavity is formed between the upper cover and the base (12) to accommodate the drive motor (3) and the multi-stage transmission mechanism.

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